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Diffstat (limited to 'compiler/Main.ml')
| -rw-r--r-- | compiler/Main.ml | 285 |
1 files changed, 285 insertions, 0 deletions
diff --git a/compiler/Main.ml b/compiler/Main.ml new file mode 100644 index 00000000..835b9088 --- /dev/null +++ b/compiler/Main.ml @@ -0,0 +1,285 @@ +open Aeneas.LlbcOfJson +open Aeneas.Logging +open Aeneas.LlbcAst +open Aeneas.Interpreter +module EL = Easy_logging.Logging +open Aeneas.Config +open Aeneas + +(** The local logger *) +let log = main_log + +let _ = + (* Set up the logging - for now we use default values - TODO: use the + * command-line arguments *) + (* By setting a level for the main_logger_handler, we filter everything. + To have a good trace: one should switch between Info and Debug. + *) + Easy_logging.Handlers.set_level main_logger_handler EL.Debug; + main_log#set_level EL.Info; + llbc_of_json_logger#set_level EL.Info; + regions_hierarchy_log#set_level EL.Info; + pre_passes_log#set_level EL.Info; + associated_types_log#set_level EL.Info; + contexts_log#set_level EL.Info; + interpreter_log#set_level EL.Info; + statements_log#set_level EL.Info; + loops_match_ctxs_log#set_level EL.Info; + loops_join_ctxs_log#set_level EL.Info; + loops_fixed_point_log#set_level EL.Info; + loops_log#set_level EL.Info; + paths_log#set_level EL.Info; + expressions_log#set_level EL.Info; + expansion_log#set_level EL.Info; + projectors_log#set_level EL.Info; + borrows_log#set_level EL.Info; + invariants_log#set_level EL.Info; + pure_utils_log#set_level EL.Info; + symbolic_to_pure_log#set_level EL.Info; + pure_micro_passes_log#set_level EL.Info; + extract_log#set_level EL.Info; + builtin_log#set_level EL.Info; + translate_log#set_level EL.Info; + scc_log#set_level EL.Info; + reorder_decls_log#set_level EL.Info + +(* This is necessary to have a backtrace when raising exceptions - for some + * reason, the -g option doesn't work. + * TODO: run with OCAMLRUNPARAM=b=1? *) +let () = Printexc.record_backtrace true + +let usage = + Printf.sprintf + {|Aeneas: verification of Rust programs by translation to pure lambda calculus + +Usage: %s [OPTIONS] FILE +|} + Sys.argv.(0) + +let () = + (* Measure start time *) + let start_time = Unix.gettimeofday () in + + (* Read the command line arguments *) + let dest_dir = ref "" in + + (* Print the imported llbc *) + let print_llbc = ref false in + + let spec_ls = + [ + ( "-backend", + Arg.Symbol (backend_names, set_backend), + " Specify the target backend" ); + ("-dest", Arg.Set_string dest_dir, " Specify the output directory"); + ( "-no-filter-useless-calls", + Arg.Clear filter_useless_monadic_calls, + " Do not filter the useless function calls" ); + ( "-no-filter-useless-funs", + Arg.Clear filter_useless_functions, + " Do not filter the useless forward/backward functions" ); + ( "-test-units", + Arg.Set test_unit_functions, + " Test the unit functions with the concrete (i.e., not symbolic) \ + interpreter" ); + ( "-test-trans-units", + Arg.Set test_trans_unit_functions, + " Test the translated unit functions with the target theorem prover's \ + normalizer" ); + ( "-decreases-clauses", + Arg.Set extract_decreases_clauses, + " Use decreases clauses/termination measures for the recursive \ + definitions" ); + ( "-state", + Arg.Set use_state, + " Use a *state*-error monads, instead of an error monads" ); + ( "-use-fuel", + Arg.Set use_fuel, + " Use a fuel parameter to control divergence" ); + ( "-backward-no-state-update", + Arg.Set backward_no_state_update, + " Forbid backward functions from updating the state" ); + ( "-template-clauses", + Arg.Set extract_template_decreases_clauses, + " Generate templates for the required decreases clauses/termination \ + measures, in a dedicated file. Implies -decreases-clauses" ); + ( "-split-files", + Arg.Set split_files, + " Split the definitions between different files for types, functions, \ + etc." ); + ( "-checks", + Arg.Set sanity_checks, + " Activate extensive sanity checks (warning: causes a ~100 times slow \ + down)." ); + ( "-no-gen-lib-entry", + Arg.Clear generate_lib_entry_point, + " Do not generate the entry point file for the generated library (only \ + valid if the crate is split between different files)" ); + ( "-lean-default-lakefile", + Arg.Clear lean_gen_lakefile, + " Generate a default lakefile.lean (Lean only)" ); + ("-print-llbc", Arg.Set print_llbc, " Print the imported LLBC"); + ("-k", Arg.Clear fail_hard, " Do not fail hard in case of error"); + ] + in + + let spec = Arg.align spec_ls in + let filenames = ref [] in + let add_filename f = filenames := f :: !filenames in + Arg.parse spec add_filename usage; + let fail () = + print_string usage; + exit 1 + in + + (* Small helper to check the validity of the input arguments and print + an error if necessary *) + let check_arg_name name = + assert (List.exists (fun (n, _, _) -> n = name) spec_ls) + in + let check_arg_implies (arg0 : bool) (name0 : string) (arg1 : bool) + (name1 : string) : unit = + check_arg_name name0; + check_arg_name name1; + if (not arg0) || arg1 then () + else ( + log#error "Invalid command-line arguments: the use of %s requires %s" + name0 name1; + fail ()) + in + + let check_arg_not (arg0 : bool) (name0 : string) (arg1 : bool) + (name1 : string) : unit = + check_arg_name name0; + check_arg_name name1; + if (not arg0) || not arg1 then () + else ( + log#error + "Invalid command-line arguments: the use of %s is incompatible with %s" + name0 name1; + fail ()) + in + + if !print_llbc then main_log#set_level EL.Debug; + + (* Sanity check (now that the arguments are parsed!): -template-clauses ==> decrease-clauses *) + check_arg_implies + !extract_template_decreases_clauses + "-template-clauses" !extract_decreases_clauses "-decreases-clauses"; + (* Sanity check: -backward-no-state-update ==> -state *) + check_arg_implies !backward_no_state_update "-backward-no-state-update" + !use_state "-state"; + (* Sanity check: the use of decrease clauses is not compatible with the use of fuel *) + check_arg_not !use_fuel "-use-fuel" !extract_decreases_clauses + "-decreases-clauses"; + (* We have: not generate_lib_entry_point ==> split_files *) + check_arg_implies + (not !generate_lib_entry_point) + "-no-gen-lib-entry" !split_files "-split-files"; + if !lean_gen_lakefile && not (!backend = Lean) then + log#error + "The -lean-default-lakefile option is valid only for the Lean backend"; + + (* Check that the user specified a backend *) + let _ = + match !opt_backend with + | Some b -> backend := b + | None -> + log#error "Backend not specified (use the `-backend` argument)"; + fail () + in + + (* Set some options depending on the backend *) + let _ = + match !backend with + | FStar -> + (* Some patterns are not supported *) + decompose_monadic_let_bindings := false; + decompose_nested_let_patterns := false; + (* F* can disambiguate the field names *) + record_fields_short_names := true + | Coq -> + (* Some patterns are not supported *) + decompose_monadic_let_bindings := true; + decompose_nested_let_patterns := true + | Lean -> + (* We don't support fuel for the Lean backend *) + if !use_fuel then ( + log#error "The Lean backend doesn't support the -use-fuel option"; + fail ()); + (* Lean can disambiguate the field names *) + record_fields_short_names := true; + (* We exploit the fact that the variant name should always be + prefixed with the type name to prevent collisions *) + variant_concatenate_type_name := false + | HOL4 -> + (* We don't support fuel for the HOL4 backend *) + if !use_fuel then ( + log#error "The HOL4 backend doesn't support the -use-fuel option"; + fail ()) + in + + (* Retrieve and check the filename *) + let filename = + match !filenames with + | [ f ] -> + (* TODO: update the extension *) + if not (Filename.check_suffix f ".llbc") then ( + print_string ("Unrecognized file extension: " ^ f ^ "\n"); + fail ()) + else if not (Sys.file_exists f) then ( + print_string ("File not found: " ^ f ^ "\n"); + fail ()) + else f + | _ -> + (* For now, we only process one file at a time *) + print_string usage; + exit 1 + in + (* Check the destination directory *) + let dest_dir = + if !dest_dir = "" then Filename.dirname filename else !dest_dir + in + + (* Load the module *) + let json = Yojson.Basic.from_file filename in + match crate_of_json json with + | Error s -> + log#error "error: %s\n" s; + exit 1 + | Ok m -> + (* Logging *) + log#linfo (lazy ("Imported: " ^ filename)); + log#ldebug (lazy ("\n" ^ Print.Crate.crate_to_string m ^ "\n")); + + (* We don't support mutually recursive definitions with decreases clauses in Lean *) + if + !backend = Lean && !extract_decreases_clauses + && List.exists + (function + | Aeneas.LlbcAst.FunGroup (RecGroup (_ :: _)) -> true + | _ -> false) + m.declarations + then ( + log#error + "The Lean backend doesn't support the use of \ + decreasing_by/termination_by clauses with mutually recursive \ + definitions"; + fail ()); + + (* Apply the pre-passes *) + let m = Aeneas.PrePasses.apply_passes m in + + (* Some options for the execution *) + + (* Test the unit functions with the concrete interpreter *) + if !test_unit_functions then Test.test_unit_functions m; + + (* Translate the functions *) + Aeneas.Translate.translate_crate filename dest_dir m; + + (* Print total elapsed time *) + log#linfo + (lazy + (Printf.sprintf "Total execution time: %f seconds" + (Unix.gettimeofday () -. start_time))) |